NOTE: As Mach values are largely temperature-dependent (outside air), the end-value presented below is representative of an object traveling at sea-level (15C / 59F). The speed of sound increases as ambient temperatures increase making the speed represented by Mach 1 variable. The Subsonic regime is up to 980 kph while Transonic flight is achieved between 980 and 1,471 kph. Supersonic flight occurs at 1,471 to 6,125 kph. Hypersonic speeds are experienced between 6,125 and 12,359 kph.
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1 Mach (M) = 1234.8 kilometers per hour (kph).
